@theamatuer agreed, though it might actually be better if he doesn't ruin Lalo's hand:
I think it's likely Fukurou will go with K-K-K-Q-Q, it's the only combo left for 63, and he was earlier saying that he wouldn't be able to withstand the torture again, so I think he'll probably try to win. (Although that split page with Fukurou and Lalo in one chapter makes me wonder if he's reconsidering).
Suppose Hal loses intentionally and happens to use up the 7 of spades and 7 of diamonds without touching the 10s or the other two 7s.
In the last round 10-10-10-7-7 would be possible for Lalo's 44, but if made it would have to use the 7 of hearts and 7 of clubs, both of which would overlap with whatever straight flush Baku gets with his 25, hitting Lalo with the calamity.
EDIT:
Actually, if Fukurou goes KKKQQ and Hal loses intentionally by picking any 5 cards outside of the heart/club 3-7 straight flush, and avoiding overlap with the KKKQQ, then there are a lot of ways for Lalo to get a calamity in the last round. Fukurou/Lalo would have to pick at least 1 card out of the heart/club 3-7 range, and hope that Hal didn't choose that particular suit. In that situation it would be safer to lose by picking cards that were used in earlier rounds.